ardour { ["type"] = "EditorAction", name = "Marker Split", license = "MIT", author = "Ardour Team", description = [[Split regions on selected tracks at all locations markers]] } function factory (params) return function () local loc = Session:locations () -- all marker locations -- http://manual.ardour.org/lua-scripting/class_reference/#ArdourUI:Selection local sel = Editor:get_selection () -- prepare undo operation -- see http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:Session Session:begin_reversible_command ("Auto Region Split") local add_undo = false -- keep track if something has changed -- Track/Bus Selection -- iterate over all Editor-GUI selected tracks -- http://manual.ardour.org/lua-scripting/class_reference/#ArdourUI:TrackSelection for r in sel.tracks:routelist ():iter () do -- each of the items 'r' is-a -- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:Route local track = r:to_track () -- see if it's a track if track:isnil () then -- if not, skip it goto continue end -- get track's playlist -- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:Playlist local playlist = track:playlist () -- clear existing changes, prepare "diff" of state for undo playlist:to_stateful ():clear_changes () -- iterate over all location markers for l in loc:list ():iter () do if l:is_mark() then -- get all regions on the given track's playlist (may be stacked) for reg in playlist:regions_at (l:start ()):iter () do playlist:split_region (reg, ARDOUR.MusicFrame (l:start(), 0)) -- the above operation will invalidate the playlist's region list: -- split creates 2 new regions. -- -- Hence this script does it the way it does: the inner-most loop -- is over playlist-regions. end end end -- collect undo data if not Session:add_stateful_diff_command (playlist:to_statefuldestructible ()):empty () then -- is something has changed, we need to save it at the end. add_undo = true end ::continue:: end -- all done, commit the combined Undo Operation if add_undo then -- the 'nil' Command here mean to use the collected diffs added above Session:commit_reversible_command (nil) else Session:abort_reversible_command () end end end -- render an icon for the toolbar action-button -- this is genrally square width == height. -- The background is set according to the theme (leave transparent when drawing). -- A foreground color is passed as parameter 'fg' -- -- ctx is-a http://manual.ardour.org/lua-scripting/class_reference/#Cairo:Context -- 2D vector graphics http://cairographics.org/ function icon (params) return function (ctx, width, height, fg) local mh = height - 3.5; local m3 = width / 3; local m6 = width / 6; -- compare to gtk2_ardour/marker.cc "Marker" ctx:set_source_rgba (.8, .8, .2, 1.0) ctx:move_to (width / 2 - m6, 2) ctx:rel_line_to (m3, 0) ctx:rel_line_to (0, mh * 0.4) ctx:rel_line_to (-m6, mh * 0.6) ctx:rel_line_to (-m6, -mh * 0.6) ctx:close_path () ctx:fill () -- draw an arrow <--|--> on top, using the foreground color ctx:set_source_rgba (LuaCairo.color_to_rgba (fg)) ctx:set_line_width (1) ctx:move_to (width * .5, height * .4) ctx:line_to (width * .5, height * .6) ctx:stroke () ctx:move_to (2, height * .5) ctx:line_to (width - 2, height * .5) ctx:stroke () ctx:move_to (width - 2, height * .5) ctx:rel_line_to (-m6, -m6) ctx:rel_line_to (0, m3) ctx:close_path () ctx:fill () ctx:move_to (2, height * .5) ctx:rel_line_to (m6, -m6) ctx:rel_line_to (0, m3) ctx:close_path () ctx:fill () end end